Qiqqki



G. H. DICKERSON AND DE FOREST HAMILTON.

SHIFTING MECHANISM FOR BOARD JOINING MACHINES.

APPLICATION FILED SEPT. 7. 1917.

1,318,851. Patented Oct. 14,1919.

4 SHEETSSHEET I.

6. H. DICKERSON AND DE FOREST HAMILTON; SHIFTING MECHANISM FOR BOARD JOINING MACHINES.

Patented Oct. 14, 1919.

4 SHEETSSHEE]' 2.

APPLICATION FILED'SEPT. 7, 1917.

G. H. DICKERSON AND DE FOREST HAMILTON. smm e MECHANISM FOR BOARD JOINING MACHINES.

APPLICATION FILED SEPT. I. 19! 7. 1,318,851, Patented Oct. 14,1919.

4 SHEETS-SHEET 3- //v uen for Fig. 4. 7/.

G. H. DICKEIISUN AND DE FOREST HAMILTON. smnme MECHANISM FOR BOARD JOINING MACHINES. APPLICATION FILED SEPT. TI'IQII. 1,318,851 Patented Oct. 14,1919.

4 SHEETS-SHEETA.

m cummmI' I'LANUGRAPII cm, WASHINGTON, I) c UNITED. STATES PATENT oFFIoE.

GLENN H. DICKERSON AND DE roREs'r HAMILTON, on GRAND RArIDs, MICHIGAN, AssIGNoRs TO THDDICKERsoN GLUE JOINTER COMPANY, or GRAND RAPIDS, MICHIGAN, A CORPORATION OF MICHIGAN.

. SHIFTING MECHANISM FOR BOARD-J DINING MACHINES.

Toall whom it may Concern Be it known that we, GLENN H. DICKER- Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Shifting Mechanism for Board-Joining Machines; and we. do hereby declare the following to be a full, clear, and exact description of the invention, such. as will enable others skilled in the art to which it appertains to make and usethe same.

This invention relates to a wood working machine, and is directed to improvements in the machine shown in patent of Glenn H. Dickerson and De Forest Hamilton, No. 1,264:,026, April 23, 1918. In the present invention, it is the primary object and purpose thereof to provide new and improved means for shifting a board intoalinement. with a succeeding board passing through the machine so that co-acting tongues and grooves formed on said boards may come into aline-.

ment in such manner as to connect the boards together. The various features of construction and arrangement of parts by means of which this end and many others not particu larly specified are attained will be apparent from the following description, reference'being had to the accompanying drawings. which show a preferred and operative con struction of the invention. 7

In the drawings,

Figure 1 is a plan view of the board shifting mechanism located at the rear end of the complete machine.

Fig. 2 is a side elevation thereof.

Fig. 3 is a vertical section on theline 3-3 of Fig. 1. Y

Figalis a fragmentary end view of the clutch mechanism for. operating the board pressure member's. V

Fig. 5 is a fragmentary side elevation, with parts shown in section, of the same means.

Fig. 6 is a portion of the essential operating mechanism of the present invention, parts being broken away and shown in close the same. a

F ig. 7 is a fragmentary perspectiveview perspective view ofithe major section to better dis- Specification of Letters Patent. Patented Oct. 14, 1919'.

I Applicationfiled September 7, 1917.

Serial No. 190,196.

of a bell crank lever forming one elementof the construction. soN and Dr. FOREST, HAMIL'roN, citizens ofthe United States of America, reslding at Fig. 8 is a perspective view of a clutch operating yoke forming an element of the inventlon. r

Fig. 9 is a perspective view of one of the board engaging bars, a number of whichare used in our machine, and V Fig. 10 is a fragmentary under-plan view of the alining bar against the edge of which the first board passing through the machine is forced in a succeeding machlne.

Like reference characters refer to like operation of the parts in the different views of the drawings.

trated in detail herein, its position, however,"

being indicated at 4 in Fig. Q'and in front of'the boardjjoiningpart of'the machine."

A horizontal table is supported at the upper ends of the'frames 2 and 3 and is divided by a longitudinal slot into'two parts 5 and 6 as indicated inFig. 3, in which slot a vertically positioned alining bar 7 is located, the.

upper edge of which is normally held above,

the surface ofthetable '5 by springs 8 of the character shown in F ig lO, having arms 9 passing underneath the bar 7 and tending to elevate the same to normal upper position.

At one side each. of the frames 2-and 3 isextended above the table 5in the form of a post 10, integral with. each of which posts, a point a; distance abovejthe table 5, is a horizontal arm 11 of a length equal to the" full width. of the table. Depending extensions 12 are-formed at the end 'of each arm 11., Shafts 13 extend downwardly into, andare rotatably mounted in said extensions 12 and in the upper ends of the posts 10,

each at its upper end above the arms 11 having a-bevel gear 14 fixed thereto; Transverse each of the levers 30 at its upper end has horizontal shafts 15 are mounted one on and above each arm 11, each shaft at each end carrying a beveled pinion 16 which meshes with its associated gear 13. A longitudinal shaft 17 likewise at one side and above the table is mounted in suitable bearings which project above the posts 10, said shaft being provided with beveled pinions 18 which mesh with the gears 14 as shown in Fig. 1, and said shaft extends the full length of the machine and over the cutting and feeding section of the machine, as well as over the board oining section thereof. A bracket 19 is fastened at the upper end of the post of frame 2 and has suitable bearings in which a shaft 20 is rotatably mounted which, at its inner end. carries a beveled pinion 20 meshing with the adjacent gear 14. A hand wheel 21 is fixed to the outer end of shaft 20 for manual operation of the same. The shafts 13 are screw-threaded at their lower ends and pass through suitable blocks 22 at the rear of the machine and similar blocks of modified construction 23 at the front end of the board oining section of the machine whereby the same may be raised and lowered on rotation of said shafts 13. This specific mechanism is not disclosed completely in detail it being shown more fully in the former application for atent to which reference has been made, and is a part of that invention rather than of the present invention, it, however, being understood that an operation of the hand wheel 21 serves to raise or lower the blocks 22 and 23 simultaneously and equal amounts. w

Cross bars 24 and 25 are supported between and carried by the pair of blocks 22 and 23 respectively. The blocks 23 also have hearings in which a shaft 26 is rotatably mounted carrying pulleys 27 around which feed chains 28 are placed, as shown in Fig.

5, for the purpose. of feeding the boards through the front portion of the machine. There is also indicated a lower pair of feed chains 28 below the upper chains 28, the boards being fed by driving the chains in any approved manner such as shown and described in said pending application for patent referred to above.

A supporting bar 29 of channel iron is supported between and secured at its ends to the bars 24 and 25 being located directly above the alining bar 7. A plurality of levers 30 are pivotally mounted at 31 between their ends to the web of bar 29, passing through suitable slots 32 in the flanges thereof, and at their lower ends have pivotal connection to the vertical flange of an angle iron pressure bar 33 located above the alining bar 7 and extending a. short distance over the table section 5. An operating bar 34 is located above the supporting bar 29 and pivotal connection thereto. It will be apparent that a longitudinal movement imparted to the operating bar 34 has the effect of raising or lowering the pressure'bar 33. A lever 35 is pivotally mounted between its ends on a bracket 36, fixed to and projecting to the rear from the front cross bar 11, said lever 35 at its upper end being formed with a head 37 adapted to contact with the front end of the operating bar 34; At its lower end lever 35 carries apin 38 which enters a slot 39 in an arm 40 formed integral with and projecting in an upper direction from one member 41 of a clutch, which is loosely mounted on the shaft 26. An annular groove 42 is cut in the clutch member 41' into which an upwardly extending rib 43 fixed on the upper side of a plate 44 extends, said plate being slidably mounted on the machine immediately below the clutch member 41, and having a pair of diagonal slots 45 cut thereinthrough which pins 46 projecting upwardly from a stationary part of the machine extend. Normally the plate is moved to the rear toward the bar 33 by a spring 44"-, the tendency of which is to move the clutch member 41 to the right (referring to Figs. 1 and 6). A set screw 47 is carried by the front end of the pressure bar which on operation of the operating bar 34 to the position shown in Fig. 6, moves plate 44 to the front and laterally, thereby moving the clutch member 41 to the left, the construction and action being best indicated in Fig. 1. A co-acting clutch member 41 is splinedon the shaft 26 turning therewith, and with the position of the pressure and operating bars as shown in Fig. 6, the clutch members are out of engagement.

The levers 30 are mounted on one side of the web of supporting bar 29. On the op posite side of the web a plurality of pressure levers 48 are pivotally mounted between their ends, from each of which upper and lower ears 49 project laterally. A rod 50 passes through each pair of ears receiving a nut at its upper end above the upper ear, around which rod a strong coiled spring 50 is placed, operatively connected thereto in such manner as to tend to force the rod downwardly until stopped by the engagement of said nut with the upper ear. Below the lower car 49 each rod is formed with a fork 52, between the arms of which a roller 53 is rotatably mounted, it being normally located a short distance above the section 6 of the table, as shown in Fig. 3. l/Vith a plurality of levers 48 thus mounted there are provided a pluralitv of pressure rollers 53 substantially the full length of the table. 7

Each of the levers 48 at its upper end is like-- bar 29 substantially mid-way between its ends and is fashioned with two spaced apart vertical arms 55 and 56 which pass one to each side of the operating bar 34. A lever 57 is pivotally mounted at one end to the upper end of the arm 55, being formed on its lower side immediately above the operating bar 34 with a depending lug 58, which is adapted to enter a notch 59 cut in the upperside of the operating bar 34. The

lever 57 passes alongside the upper end of the arm 56and has a vertical SlOi/ 6Q'CI11'1 therein through which a bolt orlpin 61011 arm 56 passes. Thefree end of the lever 57 has a notch 62 cut therein formed with a beveled side as shown. Bracket 54 includes an arm 63 on which a bell crank lever is pivotally mounted, it having a vertical arm 64 adapted to enter the slot 62 and a substantially horizontal arm 65 which extends transversely over and above the table 5. A strong coiled spring 67 is connected at one end'tc the operating bar 34, and at itsopposite end to the arm 56, the tendency of which is to force the front end of the operating bar 341firmly against the head 37 of lever and move the pressure bar 33 to lower position. Also a coiled spring is connected to the lever 57 the tendency of which is to pull the lever in a downward direction.

A transverse rock shaft .68 is mounted below thetable and a short distance in front of the board oining section of the machine,

on which shaft a sleeve 69 is mounted.

' lever 70 is forked at its lower end and pivot ally mounted on the sleeve on an axis parallel to the length of the machine, said lever extending in an upward direction above the table 5 and carrying a block 71 on one side thereof, as best shown in Fig. 6, while at its upper end it is fashioned into a yoke 72 which engages with the clutch member 41. A spring 73 connected to the lever 70 has a normal tendency to move the upper end of the lever to the right to efi'ect disengagement of the clutch member 41* from its co-acting clutch member 41. v

Two brackets 74 and 75 are secured to a side of the supporting frame in spaced apart relation and a crank shaft 76 is rotatably mounted in suitable bearings 7 4 and 7 5 carried by the brackets. 77 is interposed in the length of the shaft 76. At its forward end shaft 76 carries a clutch member 78. The bracket 75 is also provided with a second bearing 75 inwhich a shaft 79 is mounted in front ofand in alinement with the crank shaft 76, it being provided with a clutch member 80 adapted to engage with the member 78 previously described. A yoke 81 is formed at one end of a pivotally mounted arm 82 and associated with the clutch member 80, said arm 82 be-- ing pivotally mounted at 84 on an arm 85 A suitable crank,

formed integralwith the bracket 75. A coil spring 86 interposed between the arm 82 and the bar 25 has a normal tendency to gear 91 in mesh with a similar gear 92 which is mounted at the end of a transverse shaft 92 which in practice in the operation of the machine is driven continuously in any suit able manner.

Two brackets 93 are fixed to and depend from the. supporting bar 29, being spaced apart and carrying horizontal rods 94 which extend transversely of and over the table 5.1

On each rod 94 depending brackets 95 are loosely mounted, each pair supporting a rod 96 which parallelsa rod 94. A plurality of bars 97 held in spaced apart relation by blocks 98 are carried by the rods 96 which pass through vertical slots 99 cut in said bars, permitting a limited vertical movement of the bars with respect to'the rods 96. At their front ends. and on the under sides thereof bars 97 are round as indicated at 100. Each rod 94 at its free end is provided with a set collar 101 to preclude disengagement of the brackets 9.5 therefrom.

A pair of rods 102 are located above the bars 97 and fixed to and supported by the brackets 95, and pass through the brackets nearest the free ends of rods 94. Coil springs 103 are positioned around said rods and located between said brackets and two sleeves 104, one of which is slidably-mou1ited adjacent the free end of each of the rods 102.

in turn connected by a connecting rod 106 with the crank 77 heretofore described, it

being apparent that on rotation of the shaft 76 a reciprocating movement is given to the sleeves 104, which in turn transmit said movement through the springs 103 to the brackets 95, thereby moving all of the bars There- 97 back'and forth over the table. turn movement is effected by theengage- A rod connects sleeves 104 and is ment of the sleeves 104 with collars 104 fixed at the ends of bars 102. Arcam 107 is adjustably fixed to the rod 105 serving toelevate the end of lever arm .65 and through lever arm 64 disengages the lug 58 from the notch 59 of the operating bar 34.

"Rock shaft 68 at one end carries a bell crank lever 108 having a horizontal arm 109 which is actuatedby-a coil spring 110 to turn the shaftin a clockwise direction (referring to Fig. 6). The bell crank lever also includes a vertical arm 111, which at its upper end is fashioned with a clip 112 passing around a dog 113 pivotally mounted on the arm 111, and normally pressed by a leaf spring 114- against a set screw 115 threaded through said clip. A bar 116 is slidably mounted on two brackets .117 fastened to a side 1 of the supporting frame of the machine, pins 118 on said brackets passing upwardly through diagonal slots 119 cut in the bar. A spring 116 normally forces the end of bar 116 against the dog 113. On the upper side of bar 116 a lug 120 is secured, adapted when moved to turn a lever 121 pivotally mounted between its ends about its pivot. A spring 121 normally turns the lever so as to bring its lower end against lug 120. The upper end of the lever 121 when operated comes beneath and elevates a pivotally mounted dog 122 depending from and supported by one of the sleeves 104 as shown in Fig. 6, and which in the normal position of the parts strikes against the shoulder 87 of arm 82 so as to move clutch member 80 away from clutch member 87 and out of engagement therewith. An arm 123 is fixed to the rock shaft 68 substantially parallel the lever 7 0 heretofore described, and at its upper end extends slightly above the plane of the table 5 and located so as to be in the path of movement of the second board passing through the machine. I have indicated one of these boards at 124, this being the first board passed through the machine, and the posit-ion which it occupies as the second board is about to be passed through the machine to connect therewith, it being fashioned in one edge with a groove 125 adapted to co-act with and receive a similarly shaped tongue formed on the succeeding board which passes through the machine. Any suitable type of tongue and groove connection may be used so far as the connection of the boards together is concerned and that shown is to be considered merely as diagrammatic and illustrative and not in any sense as limiting the mechanism to the one type of joint indicated.

In applying the power to the machine a shaft 126 is mounted on the frame of the machine carrying a pulley 127, which may bedriven by belt from any suitable source of power, such as a line shaft, electric motor or the like. Shaft 126 also carries a wheel 128 around which an endless belt 129 passes, it'in turn passing around a larger wheel 130 fixed to a shaft 131, this shaft carrying a smaller wheel 132 around which 7 an endless belt 133 passes and leads to and around a suitably driven pulley on a shaft 134. A spur gear 135 is fixed to shaft 134 driving, by means of intermediate idle gears 136 and 137, a gear 138 which is fastened to The operation of the mechanism may now be outlined: The first board 124 passes through the machine between the upper and lower driving chains 28 and 28 at the right (referring to Figs. 1 and 3) and has its groove 125 out therein, or any other suitable and equivalent matching connecting means.

As it passes through it strikes the rounded ends 100 of the bars 97 which may be in front thereof elevating the same, the num-.

ber of bars elevated being dependent upon the width of the board. It will be understood in this connection that when this operation takes place, the bars 97 and the mechanism which carries and operates the same, are at the other extreme of movement to that shown in Fig. 1 and the dog 122 occupies the dotted line position shown in Fig. 1, whereby clutch members 80 and 7 8' are disengaged. It is also to be understood that as the board is passing through the front part of the machine before it reaches the lever 70, lever 57 is disengaged from the; operating bar 34 and coil spring 66 forces said operating bar to the front, thereby lowering the pressure bar 33. As the board passes from the groove cutting front portion of the machine, one edge thereof strikes against the block 71 on the lever 70, moving clutch member 41 into engagement with clutch member 41, whereupon the arm 40 is turned forward operating the upper end of lever 35 to the rear and forcing the operating bar 34 to position such that lug 58, on lever 57, enters the notch 59 therein, holding the pressure bar 33 in upper position as shown in Fig. 6. The engagement of clutch members 41 and 41 is momentary only as the head of set screw 47 striking against the end of plate 44 effects a lateral movement of the clutch member 41 on the shaft 26 and disengages it from the member 41 the movement, however, being of sufficient length to move the notch 59 on bar 34 to proper position to receive the lug 58. The board passes through and under some of the bars 97 as previously stated.

When the succeeding board is passed through the machine, it is carried between the upper and lower chains 28 to theleft of the machine (referring to Fig. 1) and is properly guided in the cutting portion of the machine so as tocome into contact with the upper end of the arm 123 and at its right edge directly over the alining bar 7. Before it reaches the alining bar, however, and as its end strikes against the upper end of arm 123, shaft 68 is rocked and bar 116 takingv place.

is moved as will be obvious, thereby actuating lever 121 to lift the dog 122, freeing the arm 82 which, under the force of spring 86, throwsv clutch member 80. into engagement with clutch member 78, upon which a rotation of shaft 76 begins. It will be noted that the movement of the bar 116 is both in the direction of its length and also in the direction of its width, by reason of the diagonal slots 119, whereupon the dog 113 disengages from the end of the bar after it has been movedsufiiciently and passes alongside the bar 116 freeing the same so that it may return to its original position under the influence of springs 116 and 121, thus permitting the. upper end of lever 121 to move away from the position which it takes when it engages dog 122, whereupon as the shaft 76 completes one revolution, dog 122 engages with the shoulder. 87' of arm 82 and disengages clutch members 80 and 78, one complete revolution only of the shaft 76 After this takes place, rod 105 and the series of bars 97 are moved across the table, and it will be evident that one of the bars 97 engages with the board 124 moving it over until it strikes against the .aliningbar 7, after which any further movement of the bar 105 will serve merely to compress springs 103.- As bar105 approaches its extreme of movement, in .one direction, the cam 107 comes under, elevates the end of arm 65, disengaging lug 58 from the notch 59, thereby freeing the operating bar 34 which, under the influence of spring 66, returns to its normal position and brings the pressure bar .33 against the upper side of the board 124 after bars 97 have returned to their original position on completion of the one rotation of shaft 76. All of this occurs as soon as or immediately following the operation of arm 123 by the end of the second board. The second board is forced through over said arm 123, rides upon the alining bar 7 and. depresses the same and matches with the board 124 which is held against movement by bar 54, it pinching against the board on any attempted longitudinal movement thereof; and during this movement the pressure rollers 53, ride upon the second board as it is matched with and connected to the first board 124. It will be obvious also that as soon as the operating bar 34 and the pressure bar are released and return to normal position under the influence of spring 66 so as to press against the board 124, plate 44 is likewise released and returns to its normal position under the influenceof spring 44 carrying clutch member 41 with it. When a third board is passed through the same as board 124 previously, it in turn operates the lever 70 causing an elevation of the pressure bar .33 and rollers 53 as previously described, whereupon the two boards connected together may be forced out of the machine ahead of the next succeeding board.

From the .foregoing, it will be apparent that we have devised an operative machine.

in which boards may be joined together at their edges and made to aline properly so that there will be no chance of the boards properly and in, a manner such thatit is practically impossible for the boards to get out of alinement and this irrespectiveof the width, length,-or' thickness of the boards. It will be noted in this connection that the raising or lowering of" blocks 22 and 23 simultaneously raises and lowers substantially all of the operating mechanism except mechanism, slot 39 compensating for the first, while the pivotal connection of the crank rod 126 compensates for the second whereby the mechanism is operative inall the lever 35' and-the shaft 76 and associated 5;

respects irrespective of the thickness of-the boards joined together in the machine;

We claim 1. In a mechanism of the character de-, scribed, a support including a table, alinmally projecting above the surface thereof,

.means for moving a board over the table into engagement with the alining means, and means yieldingly holding said alining means in upper position, substantially as described.

,2. Ina mechanism-of the character described, support including a table, alining means pro ecting upwardly through-the table and normally extending above the upper means mounted on the table and "DOT- surface thereof, .means for yieldingly holdinasaid Mining means innpper position,

means for moving aboard over;.the table into contact engagement with said ahnmg means, and means to engage with and hold the board in place after it is moved'over to 1 said alining means, substantially as described.

"3. ln a mechanism of the character described, a table, having alongitudinal slot therein, a bar mounted in theslOt, yielding means normally elevating said bar above the upper surface of the 'table,1and' means for moving a board over the table again-st said bar. I

4. In a mechanism of the character. de-

scribed, a table, an alining means mounted on the table, means yieldingly'holdlng said alining means above the upper surface of the table, means for movmg a board. across.

means for yieldingly holding the same above the upper surface of the table, means for moving a board across the table into engagement with said alining means, a pressure bar, and means for bringing said bar against the upper side of the board after it has been moved into engagement with the alining means.

6. In a mechanism of the character described, a table, meansto successively enter two boards on to and lengthwise of the table at one end thereof, means to move the first board transversely overthe table into operative alinement with the second board entered thereon, means to positively stop the first'board in properly alined position, said means projecting above the table at the adjacent edges of the boards, and means to render said board moving means operative as said second board is started on to the table. 7. Ina mechanlsm of the character de scribed, a table having a longitudinal slot therein, alining means'mounted in said slot, means yieldingly elevating said alining means above the upper surface of the table, means normally at rest for moving a board transversely of the table against the alining means, means for entering a second board longitudinally on to the table at one end thereof, said second board riding over the alining means and depressing the same, and means for rendering the board moving means operative actuated by the second board as it is started On to the table.

8. In a mechanism of the character described, a table, means for entering a board longitudinally thereon at one end of the ca ble, means for entering a second board longitudinally on the table at a point a distance from the first board, means made operable by said second board as it is entered on to the table for moving the first board across the table, means against which said first board strikes as it is moved across the table to stop it at a predetermined position and in proper relation to the second board to jointherewith as its movement on to the table takes place.

9. In a mechanism of the character described, a table, means for entering a board longitudinally thereon at one end of the table, means normally at rest for moving said board transversely over the table, means against which said first board strikes as it is moved across the table to stop said first'board in its transverse movement at a predetermined position with reference to the table, means for driving the board moving means, and means for connecting said driving means to stantially as described.

said board moving means to operate the same.

10. A construction as claimed in claim 9 combined with means for automatically disconnecting said driving means from the board moving means after completion of a single cycle of its movement, substantially as described.

11. In a mechanism of the character described, a table, means for entering a board longitudinally thereon at one end of the table, means for entering a second board longitudinally on the table at a point a distance from the first board, means made operable by said second board as it is entered on to the table for moving the first board across the table, means to stop said first board at a predetermined position and in proper relation to the second board to join therewith as its movement on to the table takes place, means to engage with and hold said first board against movement as the second board joins therewith, means for,

ing onto and across the table, and means to release the same as the movement of the first board across the table is completed, sub- 12. In a mechanism of the character described, a table, means to enter a board longitudinally thereon at one end of the table, an alining means positioned lengthwise of and projecting above the table, a stationary support located above the table, and extending transversely thereof, a plurality of bars mounted for limited vertical movements carried by and slidably mounted on said support lengthwise of the table under some of which the board is adapted to pass, and means to move all of said bars across the table to move the board into engagement with the alining means, substantially as described. 7

l3. Ina mechanism of the character described, a table, a stationary supporting bar mounted above and lengthwise of the table, rods projecting from the bar over and transversely of the table, a pair of spaced depending brackets slidably mounted on each rod, a rod connecting each pair of brackets, a plurality of bars provided with vertical slots therein carried by said second mentable, a pressure bar pivotally connected to and depending from said supporting bar immediately above the position occupied by the board after it is moved across'the table, means associated with said pressure bar normally operating it tolower position against said board, meansfor holding the pressure bar in upper inoperative position while the board is being entered on and moved across the table, and means to releasesaid holding means as the movement of the board across thetable is completed.

16.111 a mechanism of the characterdescribed, a table, an alming means positloned lengthwise of and extending above the table,

means to enter a boardlengthwise on the table, means to move the board across the table until stopped by said alining means, a supporting bar carried above and lengthwise of the table, a series of levers pivotally mounted between their ends in spaced rela tion on the supporting bar, a pressure bar pivotally connected to the lower ends of said levers, an operating bar similarly connected to the upper ends of the levers, a spring connected to the operating bar normally operating it to move the pressure bar to lower position against the board when it is in engagement with said alining means, latch mechanism adapted to engage with theoperating bar to hold it in inoperative position, and-means to disengage said latch mecha 'nism operable immediately after the board is moved against the alining means.

17. A mechanism as claimed in claim 16 in which said late-l1 mechanism comprises a pivotally mounted latch lever passing over and adapted to engage with-the operating bar to hold it in inoperative position, a bell crank lever pivotally mounted adjacent the lever and having one arm in contact engagement therewith, the'other arm extending" over the means for moving the board across the table against the alining means, and means on said board moving means adapted to actuate bell crank lever to thereby lift the latch lever and free the operating bar immediately after the board is moved against the alining means.

18. In a mechanism of the character described, a table, an alining device positioned lengthwise of the table, and yieldingly held above the same, means to enter a board lengthwise on to the table at one end thereof and to one side of the alining means, means tomove said board across the table against the alining means, means to enter a second board at the same end of the table on to the table over the alining means, means actuated by the passage of the second board to the table for rendering said board moving means operative, means to engage with the first board for holding the same against longitudinal movement, means rendered operative by the firstboard as it passes to the table for holding the board holding means in inoperative position while said first board is moved lengthwise of and across the table to the alining means, and means operated by the means for moving the first board across the table to free the board holding means immediately after said first board is brought against the alining means. 19.51n a mechanism of the character described,,a table, an alining device located lengthwise of the table, means yieldingly projecting said device above the table, a sup porting bar positioned lengthwise of and above the table, a plurality of levers pivotally mounted between their ends in spaced relation on one side of the supporting bar, a pressure bar pivotally connected to the lower ends of thelevers and located a short distance above and to one side of the alining device, an operating bar having a notch in its upper side pivotally connected to the upper ends of said levers, a-bracket secured to the supporting bar and extending above the operating bar, alatchlever pivotally mounted on the bracket and passing over the operating bar, meansto draw the latch lever into engagement with the operating-bar, a

spring interposed between the operating bar and bracket tending to move sald bar in one' direction to-lower the pressure bar, means to move a board across the table against the alining device carried by the supporting bar,

means for moving the operating bar against the spring to bring its notch below the'latch lever, means to operate the board moving means, and means interposed between the latch lever and the board moving means for elevating the latch lever immediately after the board is moved against theralining de vice, said latch lever elevating means being operated by said board moving means, substantially as described.

20. A construction as claimed in claim 19 combined with a second plurality of levers pivotally mounted on the other side of the supporting bar, and likewise pivotally connected at theirupper ends to the operating bar,fa roller carried by each of said. second series of levers below the lower end thereof,

and spring means tending to force the rollers to lower position, substantially as described. 7

21. In a mechanism of the character described, a table, an. alining device mounted on and normally projecting above the table, means to enter a board on to the table at one end thereof and move it lengthwise over the table, a movably mounted device for engaging against a side of the board and move it across the table against the alining device, a crank shaft, a crank rod connecting said shaft and board moving device, a driving shaft, interengaging clutch members on the crank and driving shafts, yielding means for moving said clutch, members into engagement a pivotally mounted dog carriedby the board moving means adapted to engage with the clutch member on the driving shaft to move it to inoperative position when the board moving device is in its normal inoperative position, means to enter a second board on to the table paralleling and in position for connection to the first board after it is moved over to the alining device, and means operable by said second board as it enters on to the table to trip the dog and release said clutch member on the driving shaft for engagement with the clutch member on the crank shaft, substantially as described.

22. A mechanism as claimed in claim 21 combined with means to hold the first board against movement on the table, combined with means to render said board holding means effective after the said first board is moved over against the alining device.

23. In a mechanism of the character described, a table, an alining device mounted on and normally projecting above the table, means to enter a board on to the table at one end thereof and to move the board longitudinally on to the table, means to enter a second board on to the table in a similar manner and at a distance from the point of entrance of the first board, a rock shaft, an arm projecting upwardly from the rock shaft into the path of movement of the second board, said rock shaft being located in front of said end of the table, a crank shaft, a device for engaging with a side of the first board to move it across the table into engagement with the alining device, a crank rod connecting said rock shaft and board moving device, a continuously driven shaft, interengaging clutch members on the crank and driven shafts, means for normally moving said clutch members into engagement, a pivotally mounted dog on the board moving device adapted to engage and move the clutch member on the driven shaft away from the clutch member on the crank shaft when the board moving device is in normal inoperative position, a second arm projecting from the rock shaft, a slidably mounted bar having one end in engagement with said second arm, a lug projecting upwardly from the slidably mounted bar, and a lever pivotally mounted between its ends having its lower end extending into the path of movement of said lug and its upper end adapted to pass under and elevate said pivotally mounted dog when the rock shaft is actuated by the second board as it passes over said arm on the rock shaft, substantially as described.

24. A construction as claimed in claim 23 in which said slidably mounted bar is mounted by means which carry it laterally as it is moved longitudinally with the move ment of the rock shaft, whereby the end of said bar disengages from the arm on the rock shaft which moves the same, means for returning said slidably mounted bar to its original position, and means for returning the lever engaged by the lug on said bar to its original position, whereby on completion; of one revolution of the crank shaft the dog on the board moving means engages with and disassociates the clutch member on the driving shaft from the clutch member on the crank shaft, substantially as described.

25. In a mechanism of the character described, a table, means to enter two boards in succession on to the table and lengthwise thereof from one end of the table, said means including a shaft, means for continuously driving the shaft, a clutch member having a groove therein loosely mounted on the shaft, a second clutch member adapted to engage with the first clutch member splined on the shaft, a lever pivotally mounted at its lower end andprovided at its upper end with a yoke engaging with said second clutch member, a spring connection to the lever for normally moving the second clutch member away from the first clutch member, an arm provided with a slot therein projecting upwardly from the first clutch member, a second lever pivotally mounted between its ends above said slotted arm, a pin on the lower end of. the second lever projecting into the slot, a stationary bar mounted above and lengthwise-of the table, a series of levers pivotally mounted between their ends in spaced relation on the stationary bar, a pressure bar carried by the lower ends of said series of levers, an operating bar pivotally carried by the upper ends of said series of bars and having a notch cut in its upper side, a latch lever carried on the supporting bar above and across the operating bar and adapted to enter the notch therein, a head at the upper end of the second lever contacting with the end of the operating bar, a plate mounted for simultaneous longitudinal and lateral sliding movement below the first clutch member, a rib on its upper side extending into the groove in the first clutch member, means normally forcing the operating bar into engagement with the head on the second lever, a member carried by the end of the pressure bar, means normally drawing said plate against said member,

and a block on the first lever against which I a side of the first board engages as it passes thereby forcing the second clutch member into engagement with the first clutch member, substantially as described.

In testimony whereof we affix our signatures.

GLENN, H. DICKERSON. DE FOREST HAMILTON.

Copieg of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington D. 0. 

